Zte ZXHN F660 - Voip Function; USB Function

ZXHN F660 Product Description
ZTE Confidential & Proprietary 15
 WPS
 WMM
 Maximum TX power up to 100mW
 Two External antennas
4.3 VoIP Function
 SIP and H.248 compliant
 Support in-band DTMF tone sending/receiving and out-band DTMF signaling
with RTP, as per RFC2833
 32ms echo cancellation
 G.711 a/u law, G.729, and G.722 coding/encoding algorithm
 Voice Activity Detectors (VAD) and Comfort Noise Generation (CNG)
 T.30 fax: fax transparent transmission (uncontrolled, RTCP control, and SS control)
 T.38 fax
 Supplementary services: caller ID display, call waiting, call forwarding, call transfer,
three way calling, etc
4.4 USB Function
 One USB host interface
 Full-speed and high-speed USB 2.0 interface
 USB fast file backup, fast recovery.